Research Article: catena-Poly[[diaqua­dibromidoman­ganese(III)]-μ-pyridine-2-carboxyl­ato]

Date Published: August 01, 2009

Publisher: International Union of Crystallography

Author(s): Nam-Ho Kim, Kwang Ha.


The asymmetric unit of the title compound, [MnBr2(C6H4NO2)(H2O)2]n, contains one monomeric unit of the neutral linear coordination polymer. The Mn3+ ions are bridged by anionic pyridine-2-carboxyl­ate (pic) ligands, thereby forming a chain-like structure along the c axis, and are six-coordinated in a distorted octa­hedral environment by two O atoms of the two different carboxyl­ate groups, two O atoms of two water mol­ecules and two Br atoms. The complex displays inter­molecular O—H⋯Br, O—H⋯N, O—H⋯O, C—H⋯O and C—H⋯Br hydrogen bonding. There may also be inter­molecular π–π inter­actions between adjacent pyridine rings, with a centroid–centroid distance of 3.993 (8) Å.

Partial Text

For the synthesis and structure of [Mn(pic)3], see: Figgis et al. (1978 ▶); Yamaguchi & Sawyer (1985 ▶); Li et al. (2000 ▶). For the synthesis and structure of [Mn(pic)2(H2O)2], see: Okabe & Koizumi (1998 ▶); Barandika et al. (1999 ▶). For details of mono-, di- and polynuclear Mn(II, III, IV)–pic complexes, see: Huang et al. (2004 ▶). For the synthesis and structure of the anionic Mn(II)–pic polymer, {[MnBr2(pic)(H2O)]−}n, see: Kim et al. (2009 ▶).




0 0 vote
Article Rating
Notify of
Inline Feedbacks
View all comments